AB1704 CORRELATION BETWEEN LUNG ULTRASOUND AND HIGH-RESOLUTION CHEST CT IN SYSTEMIC SCLEROSIS
Authors: J. Santana Peralta, D. Garcia, R. A. Alvarez Santana, L. Perez Rodriguez, T. Polanco Mora, L. Concepción Sanchez, I. Paulino, I. Mercedes, E. Rodriguez Bautista, T. Valdez, A. Feriz, R. Muñoz Louis
Journal: Annals of the Rheumatic Diseases (2023)

<h3>Background</h3> Systemic sclerosis (SSc) is a chronic, autoimmune, multisystemic disease characterized by fibrosis and vasculopathy. Mortality in patients with systemic sclerosis who present with interstitial lung disease can be multiplied up to 3 times in comparison with subjects who do not present it. It is estimated that 70-90% of patients with SSc have interstitial lung involvement, mainly of the diffuse type. It has been proposed that high-resolution chest tomography (HRCT) may have a role in the evaluation of interstitial lung disease in patients with autoimmune inflammatory rheumatologic diseases, with involvement of more than 20% of the lung parenchyma being a sign of poor prognosis and increased mortality. Its evaluation is determined by the detection and quantification of B lines. <h3>Objectives</h3> To correlate findings between lung ultrasound and high-resolution chest CT in patients with systemic sclerosis. <h3>Methods</h3> Descriptive, observational, cross-sectional study. Lung ultrasound was performed with a Siemmens Acuson X150 equipment, with 13mHz transducer and CT high-resolution (HRCT) in the rheumatology service of the Hospital Docente Padre Billini between August to November 2021. Inclusion criteria: ≥ 18 years, diagnosis of SSc according to ACR/EULAR 2013 criteria. Exclusion criteria: history of pre-existing lung disease. <h3>Results</h3> Descriptive, observational, cross-sectional study. Lung ultrasound was performed with a Siemmens Acuson X150 equipment, with 13mHz transducer and CT high-resolution (HRCT) in the rheumatology service of the Hospital Docente Padre Billini between August to November 2021. Inclusion criteria: ≥ 18 years, diagnosis of SSc according to ACR/EULAR 2013 criteria. Exclusion criteria: history of pre-existing lung disease. <h3>Conclusion</h3> Our study showed a positive correlation between lung ultrasound findings and HRCT. The most frequent pattern in HRCT was NSIP, while the most frequent ultrasound finding was the. <h3>References</h3> [1]Morrisroe K, Stevens W, Sahhar J. The clinical and economic burden of systemic sclerosis related interstitial lung disease. Rheumatology. 2019;0(1):1-11. [2]Volkmann E, Tashkin D, Sim M, Kim G, Goldin J, Clements P. Determining progression of scleroderma-related interstitial lung disease. Journal of Scleroderma and Related Disorders. 2018;4(1):62-70. [3]Simeón-Aznar C, Fonollosa-Plá V, et al. Registry of the Spanish Network for Systemic Sclerosis. Medicine. 2015;94(43): e1728. [4]Hussein, K., Shaaban, L. and Mohamed, E., 2016. Correlation of high-resolution CT patterns with pulmonary function tests in patients with interstitial lung diseases. Egyptian Journal of Chest Diseases and Tuberculosis, 65(3), pp.681-688. [5]Chung JH, Walker CM, Hobbs S. Imaging Features of Systemic Sclerosis-Associated Interstitial Lung Disease. J Vis Exp. 2020 <h3>Acknowledgements:</h3> NIL. <h3>Disclosure of Interests</h3> None Declared.